How to model compression-dilation-compression vertical deformation behaviour during direct shear test?
Hi all,
I'm currently using Yade to try simulate a direct shear test simulation, and benchmark against the lab results in [1]. The particles I used in my simulation are spheres. Before this, I have read at a lot of research papers about DEM simulation for direct shear test, and most of the papers emphasizes a lot on how to calibrate the micro-parameters to get the intended response for shear stress vs shear displacement plot, but there is very little information about how to calibrate DEM simulation to match the lab result of vertical deformation vs shear displacement plot.
My problem now is when I run my direct shear test simulation in Yade, and later look at the vertical deformation vs shear displacement result, the behaviour is like compression-
I have reasoned out that for [2] and [3] the DEM simulation and lab direct shear test can be compared because both methods the vertical deformation behaviour show compression-
I hope someone can give me some hints or advice on which micro-parameter or which contact model should I change in DEM to match this vertical deformation pattern of compression-
I greatly appreciate any advice to be given based on this problem of mine.
[1] https:/
[2] https:/
[3] https:/
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